Home / 4,221.76-5,825.64-2,647.12

Finding the Fourth Proportional to 4,221.76, 5,825.64 and 2,647.12

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Solution

The fourth proportional to 4,221.76, 5,825.64 and 2,647.12 is: 3,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.76 : 5,825.64 = 2,647.12 : x
  2. Step 2: Convert to fraction form
    4,221.76/5,825.64 = 2,647.12/x
  3. Step 3: Cross multiply
    4,221.76x = 5,825.64 × 2,647.12
  4. Step 4: Simplify right side
    4,221.76x = 15,421,168.16
  5. Step 5: Solve for x
    x = 15,421,168.16/4,221.76
  6. Step 6: Final answer
    x = 3,652.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.